Fir 1, 2, 3 & 5000
Ion Science Lt d
Ion Science L td
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Instrument Menu
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Unit Selector (1, 2, 3 & 5)
The Fir photo-ionisation detector can be selected to measure VOC's in either ppm (Parts per
million, by volume), ppb (Parts per billion) or mg/m
3
(Milligrams per cubic meter). NB: the ppb option is
available on the Fir 5000 and is upgradeable on the 1, 2 and 3000 versions.
This is done on the 1stPC software in the Application tab.
Cycle Screens
When viewing readings in large numerical screen format the Fir can be set to rotate through each
sensor reading in turn. This is set using the 1stPC software. When the cycle screens option is unselected the
user can move between sensor readings using the UP and DOWN keys.
Data Log Memory Alarm (2, 3 & 5)
Fir has been designed to continuously store data; once the memory has
reached its full capacity (8 Mb) it will automatically begin to overwrite previous
readings. An alarm can be set on the 1stPC software to inform the user that this is
due to happen giving the user time to download any data that may be over written,
if they wish to do so.
